Facebook Friend Search
For those who do not understand about the reverse email lookup-- I'll wager there will be couple of- It's an email-based search functionality that lets users to search for other Facebook user based upon their e-mail address.
Utilizing this feature is dead simple. Simply paste the e-mail address of the a complete stranger or unknown e-mail sender into the Facebook search box and an auto-suggest fall will let you know if a matching profile exists in the social media network.
Upside.
A significant advantage of this feature is that it offers an approach for verifying unknown e-mail addresses and help you to find a person in seconds.
Disadvantage.
A significant mistake of this function is that spammers can quickly map collected e-mail accounts to user profiles, and utilize the publicly readily available info to craft very persuading tailored emails (for phishing). Facebook Friend Search So, if you are on Facebook, avoid sharing your email address with complete strangers on online forums and chatroom.